Add a paragraph on the rules in OSM or the lack of them

app/assets/stylesheets/common.scss

@@ -2516,6 +2516,10 @@ input.richtext_title[type="text"] {
     background-position: -300px 0;
   }
 
+  .sprite.rules {
+    background-position: -350px 0;
+  }
+
   .start-mapping {
     margin: auto;
     cursor: pointer;

app/views/site/welcome.html.erb

@@ -48,6 +48,12 @@
   </div>
 </div>
 
+<div class='col12 clearfix icon-list'>
+  <h3><%= t "welcome_page.rules.title" %></h3>
+  <span class='sprite small term rules'></span>
+  <p><%= t "welcome_page.rules.paragraph_1_html" %></p>
+</div>
+
 <div class='col12 clearfix icon-list'>
   <h3><%= t "welcome_page.questions.title" %></h3>
   <span class='sprite small term question'></span>

config/locales/en.yml

@@ -1114,6 +1114,14 @@ en:
       tag_html: |
         A <strong>tag</strong> is a bit of data about a node or way, like a
         restaurant's name or a road's speed limit.
+    rules:
+      title: Rules!
+      paragraph_1_html: |
+        OpenStreetMap has few formal rules but we expect all participants to collaborate
+        with, and communicate with, the community. If you are considering
+        any activities other than editing by hand, please read and follow the guidelines on 
+        <a href='http://wiki.openstreetmap.org/wiki/Import/Guidelines'>Imports</a> and 
+        <a href='http://wiki.openstreetmap.org/wiki/Automated_Edits_code_of_conduct'>Automated Edits</a>.
     questions:
       title: Any questions?
       paragraph_1_html: |